Screw adjustable mechanism



Fell). 25, 1930. A, LlNAREs 1,748,888

SCREW ADJUSTABLE MECHANISM Filed June l, 1927 l ,1 '1.55 f 42 "a 4749 46 v lNvgNToR d 4@ bala/cto lm/ares.

BY Q I ATTORNEY tionedV forvertical `j achingI movement.'

l fiisEIiARinoV LINARES, or MAR-nonno, vENEZUELA I scaEw' ADJUSTABLE MECHANISM .lippncfaionV mea June 1, 1927. yserial No. 195,810.

My invention relates. to improvements in .through the of `Figure l.

screw adjustable mechanismsV adapted to and embodied inacombinationof elements providing ajack, or like tool/,and 1t consists 1n 'A f5 the combinations, constructions andarrangements Y hereinldescribed and. claimed.

In accordance with the'present-invention 'j ytion through the handled operatinghead of andy asa feature thereof', I have provided structural meanscombining'a wrench strucT 1 0 turewith a support for its fixed jaw anda hanger or jacking element for its movable jaw tov rform a jacking mechanism separable into its component parts for shipment or rstor support.c'onstnucted to permit- .thefjack'` to bef based 'upona ground or platform level or upon an intermediatepoint..

` '112.0' j A further object ofthe inventionis the pro-A vision vof vra jacking mechanism embodying jacking'- andV unj-acking operation.

V- novel screw operated means .for 'effecting the y th'ejack forrvertical or"horizkontal jacking movement and 'for rvariable angularj positions' v 1 ofthe jack relative'toI its rsupport enabling the .Y :30 jack/to be employed in positions and'under- 'circumstances not heretoforeipossible. Y *A* further object ofthe invention is;` the provisionof a 'jacking meclian-ismcomprisey ing' aplurality' of separable cooperating ele# f f mentsiwhieh Win permit the .jackk to be readilylassemble'd and disassembled` and permit. shipment OrstOragethereOf in compact as seinlolyv requiring relativelysmall shipping or n u l storage space.l l e .These and other objects and Y advantages Y willbe more:V clearly apparentfrom the detailed specification following which is to be read in conjunction with the accompanying drawings forming part thereof andy in .45 which'-''f Figure lisa I certainfvoffthe .parts left. in elevation, of a jacking rnecha'nismv constructed in accordance with-theffpresentf invention and posi- An object of `the'present invention is the f provision ofJa jacking `mechanism havinga view in vertical; section with ofthe shanl .6 beyond the outer fend ofthe Figure 2 is. a horizontal-sectionalview jack base takenon line 2 2.

f Figure 3 is a detail perspective o-fafportion' of the jack base lseating the hired jawofthev`55 f Y wrenchstructure.V f

.Figure i is a transverse longitudinal secthe jacking screw. Y

.Figure 5 isa perspective detail ofthe *sup- 60 i porting `plate ofthejackfstandayd; f y Y Figur@ @is a vfragmentary verticals'ection tion seating the fixed jaw of the wr'enchstruc ture. f. 5 lThe-inventionprovides7 among other feav tures, a set of cooperating parts combining toy form a lifting jack andincludilng. thev as- 79 sembly, a plurality of jack supportingfmeans enabling the-jack to be based on ground` or platform or to. be mounted on or secured. vto 'an intermediate support and adjusted j thereon to position thejack at an angle there-i 715 to. e' W 1 In carrying out the invention,V provision is made of a wrench structure providing the I i 'A 'relatively movable parts of the jacking mech! e anisrn and comprising a j awl-having' a shankj .8.0 u rigid'therewith, said shank comprising' a rela'- l v tivelylarge nonecircular inner' end portionf 23nd a smaller circularouter 'end portionjr' which ha-sits extremeend portion further." reduced andscrewthreadedat.4ll The'wrench alsov comprises a movable jaw 5""for'cooper4`l ati-ng withthe jaw ll and Ahaving Ka-tubular' shanlr 6 "which, is,`V slidalole on ther'lelativelv extends al substantial 'distanceY beyond. the. 9U?.

vouter endof the portion 2 of theshankof'the .f

'tional configuration ofthe portion-Qqlofthe shank of the lso that the jawfwill"loe".V I

helldY against turning Aabout4 the' axisfofth'e. shank' of thejjaw land the outer lend portion 00%,

portion 2 of the shank of the jaw 1 may have its bore formed to be circular in cross section and provided with internal screw threads indicated at 7.

A tubular externally screw threaded adjusting screw 10 is rotatably supported on the relatively small circular portion 3 of the shank of the jaw l and at its inner end alouts a bearing washer 11 that is disposed on the` portion 3 of the shank of the jaw 1 againstV the shoulder that is Vproduced at the outer end of the portion 2 of the shank of the jaw 1, the inner end portion of the screw 10 being in threaded engagementwith the internally screw threaded outer end portion 7 of the shankf of the j aw 5. The outer end portion of the screw, 10 is enlarged diametrically to produce an integral ratchet wheel 12 havingy its periphery curved substantially convexly in one direction about the axis of the shank V of the jaw 1 will cause the jaw 5 to move toward the jaw 1 when the jaws of the wrench are open and that reversal of the direction of rotation of the screw 10 will cause a reversal of direction of movement of the aw 5 in re-,

spect to the aw 1. A set screw 17 that is can ried by the outer end portion' ofthe tubular shank 6 of the jaw 5 may be tightened against the screw 10 to prevent accident-al rotation of the screw 10 and consequently to hold theJ jaw 5 in adjusted position in respect to theI jaw 1. Y v

A lever for operating the screw comprises a handle bar 1-9 and a head for embracing the ratchet wheel 12. Said head comprises a section 20which is integral with the handle bar and a cooperating ,section 21 having a short shank 22 adapted to iit in a laterally cut away portion 23 on the adjacent end of the handle bar 19 and connected with the handle bar 19 by a transverse pivot element 24. A retaining ring 25 is slidable on the handle V19 to and from position to overlap the shank 22 and to then retain the shank 22 completely in the cut away portion 23 of the handle 19 so that the sections 2O and 21 will be retained on the ratchet wheel 12 and will partially encircle th-e ratchet wheel 12. The sections 20 and 21 are curved transversely to conform Vsubstantially to the transverse curvature of the peripheral portion of the ratchet wheel1'2. The free end of the shank 22 and the adjacent wall of the cut away portion-of the handle 19 are coinplementarily beveled so as to produce a relatively large contact sur* ipv4-asse face between the handle 19 and theshank 22 when the shank 22 is completely disposed in the cut away portion 23 of the handle 19. The adjacent or abutting ends of the sections 20 and 21 likewise are complementarily `bev,

eled so as to fit neatly and firmly against each other when the sections 20 and 21 are Yclosed as shown in Figure 2. TWhen the ring 25 has been slid along the handle 19 out of engage` ment with the shank 227 the section 21 may swing away from the section 20 a distance sufficient to permit removal of the lever from t-he ratchet wheel 12.

The section 21 of the head of the lever is formed with an outwardly extending tubular boss 26 having a head 27 at its outer end formed with the laterally extending flange 23 or marginal edge portion and with a relatively small central opening 29 in axial alinement with a larger opening 30 in thesecT tion 21. An actuating pawl 31 extends slidably through the opening 30y and has a reduced rigid shank 32 which Yprotrudes from the tubularjboss 26 through the opening 29 in the head 27. The outer end portion of the shank 32 is threadedly engaged by an adjusting nut 33 having a laterally extending linger 34 formedwith a bent end portion 35 in contact with the edge of the flange 28. A

convexo-concavespringwasher 436 having a notched edge is disposed on the shank 32 between the nut 33 and the head 27 of the boss 26 and limits the inward movement of the pawl 31 in response to the actuationl ofa compression spring 37 that is coiled about the shank 32 within the ,confines of the tubular boss 26. The nut 33 can be tightened toexpand the spring ywasher 36 more-or less and thereby to permit the pawl 31 to move a greater or less distance toward the centerrof the head of the leverV to respond tothe actuation of the spring 37. The extending inner end of the pawl 31is beveled as indicated and is adapted to enter into one of the sockets 13.

in the ratchet wheel 12 when the sections20 and 21 are closed so that swinging of the lever in one direction about the axisof. the shank of the jaw 1 will cause the screw 10 to turn in the saine direction on the shank of the jaw 1 and swinging ofthe lever inthe opposite direction about the axis of the shankof the jaw 1 will not cause rotation of the screw 10 for the reason that the beveled face of the pawl 31 will contact with a side wall .of the associated socket 13 and will ride out of such Vsocket against the action of the spring 37 onto the periphery of the ratchet wheel 12.

In moving the jaw 5 toward jaw 1, the leverV vention, the fixed jaw 1 is formed with an I extensionor crown'on its head (Figure f1) l' U- shaped frame member .40 having apair of substantially parallel arms 41l and 42, re- 'spectively The freel end portion of the arm 42 carries afclarnping'screwV 43. The arm 41 is formed'vvith an extending lug-45 atits vreeend.` The lug 45 is rounded olf transe verselyand is adapted to itbetween a pair of spaced lateral ears 46 and-47, respee" tively, on afsupporting'bloek 48." The mendv bers 46, 4 5, and 47 are provided with 'alined openings 'for the-recept'onof a pivot pin 49,`

whereby the supporting bloekf`48 will be pivotally connectedivith thelarm 41 ofthe frame member`40, 'as shown to advantagein Figure 6. The sufpporting'block'48 is ormed'with a seat jat-50in which the -crovvnportion 8 ofV thefj-a-W 1 .of the Wrench is' adapted to' lit snugly. 'A fasteningscrevv 5 1 has v-itsshank threaded through an Opening in Vaside Wall ofthe sea-t S0-and 'can be tightened until the end portionV of the shank enters and' engages Witli'a socket. or depression 52 the adjacent i Y side of the crown portion o 't-he jaiv 1,'vvlierebyl thefjavv 1 -will be secured firmlyy to lthe supportingbloek 48. 'i The jan/.v1 1.thenvvill serveasparto'f the jack' ibase. with its shank 2 constituting `a vguide upon which they tubular Ashank 6 of the jaw can-be adj-usted to'- ward and avv/ ay fronigthejaw 1. f

y VThe supporting block48y has a substantially flat Vbase and isi formed lWith extending edgefportionsas clearly s hovvn'in` Figure 3f vTheseedge portions '53 are 'formed With vpzlxrallel ears "54 at the free endet-the bloo'lr `48"and atfthe outer sides @tand/11P- standirigfitrom slots in the edge portions y standard .61, whereby .the supponti-ng member of the block. "A substantially'UT-shaped extension 56 hasfa pairo'f arms 57 formed. atl

their extremities A vvith forwardly extending lugs 'for ears 58'Which extend-into the slots." A55 and are secured to the block 48h51 al-in.ed

transverse pivotV elements 59. Thelugsl l175 :parallel with1 .the :upper fatee 72 en j ner Ledge portion ofthegngieiI- lbo 70;

abutthe edges 53 When' the reary f aees of the arms and web ofthe extension 57 +5657 are Hush-'With the latbasefof theibloclt." The" block will thenhave' a bearinggsurfa'cefof yCI) i Y relatively greatarea'on av flat vv supporting-y surface; when the bloek landits eXtension'are mount andfornipart of the'li-fting mechanism ofthe aeki lCooperating with the aw 5 and its. shanlris a jack standard 6 1 Whlieh is provided intermediate `"its llengthpvv'ith a laterallyv extending integral-retaining v'ring 62'that'isadaptedto be' .slipped v over the'up# per jendV of the "shank of ithe'v jaw. when' the Y ser'eW "10 'has 'beenmemoved therefrom. The

standard L6'1 then may be ino-ved .downwardlv until the 'lower 'end of lthe standard 61: rests on the adjacent face of the jaw and a re.-v duced extension 63 is disposed in asoeket 64, in the :ja-W' 5. lAt this time, the/retaining ring62 Will restv on the upper end ofithe shank l6 ofthejaw- 5 uand theA standard'fl l" will'be returned ontlie shank 6y of the.ja:w 5 by reason 'of the engagement of a depending marginal -iange 65on the ring' 62 w'viththev upper end port-ion of' the vshank ,6. rlhe srew 1,0 and` its operating ylever 'then may be disposed on the shank of the jaw 1 inthe 'manner.liereinbeforeA described and. asillus.- trated in Figure 1. l l

AThestandard .6l is for-med Witli* vertical channels, asiat 66, in its vopposite sides, Such .ehannels'extending from the upper end .of the standard 61v nearlv tothe-lower end thereof. The standard `61 also has a -vertieallseries of spaeed supporting lugs 6:7 .at the side thereof 'which is .opposite .to` the retaining ring. .62. Eaeh of the lugs 67 has anzupper face ',618 that is inclined slightly from the horizontalim its .outward and upward direction and arlower face y69 Which is inclined downwardlyandl: .I wardly at a relatively 4great angle withfthe v horizontal. A vertically adjustable support.- j ingmember orY step platef)v has an inner edge portionl formed atfl'to fit snugly against the *standardl between adjaeentlu'gs 67 to rest'and be supported by the underlying lugs' .the upper faee'of their-mer,.edge portioiipl being beveled as indioatedat 72M) '.GOlOlm to* Y l the'inelinationotthe lowerfaces'offthewlligS 67 VTh'e'inner edge portionloii-tlie Supporting member i7 0A isf provided atyits'eppofsfite sides with 'a pair- .ofi integral retaining arms,- a's at 73, which straddle the standard landfhL-N 7 guiding and retaining lugs, as at 7.4,jfor1ned on their-inner faces for entering-and .eingeging with thek channeled port-ion; 6610i. the

7.0 will herinly maintained in .enywaidillfSQ/.Gl position om thefstanclarcl 61 when these parte 110 ing member-f77@ is lhori'zoiit-al'as sli own i Figure 1. The'retaining and vguiding lugs have their lower faces inelinedfas ind t `l from the upper face-7210i the .IljllQ de@ Gil?? tien ofV the men-merio a -Sigitlyf greater .than ,the {thick-ness. ofthe lugs .6.7 and the adjacent 'Wallis of :the-Lehannelsof standard .l .combi-ned, whereby thesupport 'f ing member "Z0 .can be .swung kuptv ardlj the positionshownin Figure (inea/ r vertical andv .the inner edge portion lot supporting member 'then Willi clear 13h@ iges. of thelugs 6 7 and the :supporting .mlblll be moved vertically alongthestandgard.te an-yr desired :position and-.the .supporting .IIl-.elrilfb 'ZOthen Willfremainin such'f i has been released and" perm 'bed cured by a screw 77 to the upper end of the standard 61 so that its end portions will obstruct the upper ends of the channels 66.

Theoperation of the jacking mechanism will'be clear and need only be briefly reviewed. In the position of the parts shown in Figure l, the jack base is resting upon the ground or a platform' or floor with the clamp 40 turned on its pivot 49 to be flat in the plane of the floor. Rotation ot the screw 10 in one direction through the handled intermittently gripping ratchet head will cause the plate 70 to lift or jack .up a structure such as the front axle78, of a motor vehicle, and reverse rotation will lower said axle or other structure. IVhere the structure to be lit-ted moved is so positioned relatively to the ground or platform so that the jack base 48 cannot be used, an intermediate support may be engaged and clamped between the arms 41, 42 of the U clamp 40 through its clamping screw 43. rIhe ears 46, 47 are joined by flat supporting surfaces permitting swinging movement of the clamp arms 4l, 42 through an arc of approximately 180 degrees, so that the clamp may be engaged with a support and positioned at an angle to rthebase 48 thereby permitting` the use of the jack in other than vertical lifting operations, such for example, as in `horizontal position with the U clamp 40 engaging a transverse support as an anchora e. i Y

gObviously, .the invention is susceptible ot embodiment in forms other than those which are illustratedin the accompanying drawings, and I therefore consider as my own all suchmodifications and adaptations thereofas fairly fall within theV scope of, the'appended claims.A f

I claim:

1. In a mechanism of the characterl described, a wrench having a jaw provided with a shank, a second jaw having a tubular shank slidableon the shank of the rst named jaw, a block having a seat for the partial reception ot'said first named j aw and adapted to support said wrench with the Shanks thereof upright, a standard adapted to rest at its lower end on said secondnamed aw, a'ring carried by said standard adapted to engage with said tubular shank to retain said standard on said tubular shank, said standard having a longitudinal series ot spaced teeth, and a substantially flat supporting member having means slidably embracing said stand ard and having a portion adapted to `be supported on any one of said teeth. e

` 2. In a mechanism of the character described, a wrench comprising a jaw having a shank and a second jaw having a tubular shank slidable on said first named shank, a block engageable with said first named jaw for supporting the wrench with the shanks Vupright, a standard'having a laterally extending retaining ring engageable withUthe Vsupporting surface.

va work supporting member vertically adj ustable on said standard.

3.,In a mechanism of theV character described, a wrench comprising a jaw havingI a shank and asecond jaw having a tubular shank vslidable on said first named shank, a block engageableV with said first named jaw for supporting the wrench with the Shanks upright, a standard having a laterally extending retaining ring engageable with the upper end portion of said tubular shank, said` standard having a reduced lower end portion and said second named jaw having a socket in its upper end -for the reception of said reduced lower end portion ot' the standard,v and a work supporting member vertically adjustable on said standard, and a clamp pivotally connected with said supporting block.

4. In a mechanism of the character described, a wrench comprising a jaw having a shank-and a second jaw having a tubular shank slidablev on said first named shank, a block engageable with said first named jaw for supporting the `wrench with the shan'ks upright, a standard havinga laterally extending retaining ring engageable with the` upper end portion of said tubular shank, said standard having a reduced lower end. portion and said `second named jaw havn ing a socket in ,its upper end for the reception of said reducedlower end portion ofk the standard, and a work supporting member vertically adjustable on said standard, and a supplementary supporting member hinged to said block, said supplementary supporting member of said block having cooperative means for maintaining the supplementary supporting member flush with the lower'face of said blockwhen said block and the supplementary supporting member rest on a flat 5. A ackcomprising a'base having `a seat thereon, a wrench having l.its fixed jaw rigid` ly mounted on andsecuredrto said seat and I having a shank portion, amovable wrench jaw having ashank portion guiding on the shank portion otl the fixed jaw 'for rectilinear movement, means'tor effecting movement of said jaw and its shank towardvand from said xed jaw, and a jack standarddetachably secured to said movable jaw at the lend of the standard'and intermediate otv the;len`gth of thestandard to saidshank lfor movement therewith. j i v j 6. A jack comprising a base having. a U-.

shaped clampingY member pivotally mounted thereon for swinging movement about an axis parallel with and above its bottom face,

'a wrench having a fixed jaw rigidly secured to said base andhaving aishank extending therefrom, a movable jaw having a 'shank guided upon said first shank k:for rectilinear movement, a jack Standard secured to said movable j avv at the end of the standard and intermediateof the lengthv of the standard to said shank for rectilinear movement therewith, and means for eecting relative movel ments between said fixed avv and base and said movable jaw and its attached jackV standard. l

7. A jack comprising a base plate having a javv` seat thereon, 'a'hinged lextensionfoot at one edge and a U-shaped` clamping member pivotally mounted thereon at its opposite projecting shank, a second and movable jaw having a shankguidedonjsaid first shank for rectilinear `movement, .means for effectf ving relative rectilinear movement Vof saidV jaws, and a jack vstandard, secured to said second and movable jaW for movement there- With.,V Y v o 8..A jack comprising a basehaving a re-l cessed seat therein, a screviT adjustable Wrench having the'head of its fixed javi/,crowned to conform to and fit in said seat and having yits's'hank upstanding therefrom, with cooperating means onjavv and seat for rigid c interconnection,thereof,a movable jaw having a tubular shank upstandin'g from its head and embracing and vertically movable upon the shank of the fixed jaw, a jack standard demountably affixed to the yshank and head of y said movable jaw of said Wrench for movement thereWith,ia nd 4means for engaging a support connected to'said base andv elevatedv above the line of its bottom Surface.

n ABELARDO LINARES.; Y 

